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Article

Study on the Efficiency of On-Site Sludge Reduction Using Ti/SnO2-Sb and Ti/RuO2-IrO2 Electrodes Based on a Cell Lysis-Cryptic Growth System

by 1,2, 1,2, 1,2, 1,2,*, 1,2,*, 1, 1,2, 1,2 and 1,2
1
Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology, Shenzhen 518055, China
2
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Marco S. Lucas
Water 2021, 13(5), 616; https://doi.org/10.3390/w13050616
Received: 6 January 2021 / Revised: 20 February 2021 / Accepted: 22 February 2021 / Published: 26 February 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
The present study investigated the parameters and the mechanism of action of electrochemical cell lysis to reduce the return sludge from secondary settlers based on the theory of cell lysis-cryptic growth. The factors influencing the functioning of two electrodes (Ti/SnO2-Sb and Ti/RuO2-IrO2) were investigated to determine the optimal cell lysis parameters for each electrode, and the effects of the two electrodes on cell lysis were compared under these conditions. Finally, the Ti/SnO2-Sb electrode was selected for the subsequent experiments. The electrolysis reaction was performed using the following parameters: the initial sludge concentration was 7000 mg/L, the working voltage was 18 V, the plate spacing was 1 cm, the initial pH was 6.8 to 7.0, and the electrolysis duration was 90 min. The degree of disintegration of the sludge and the cell lysis rate reached 25.35% and 20.15%, respectively. In summary, electrochemical cell lysis has a good prospect for sludge reduction. View Full-Text
Keywords: electrochemical oxidation; on-site sludge; cell lysis-cryptic growth; Ti/SnO2-Sb; Ti/RuO2-IrO2 electrochemical oxidation; on-site sludge; cell lysis-cryptic growth; Ti/SnO2-Sb; Ti/RuO2-IrO2
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MDPI and ACS Style

He, Z.; Zhou, X.; Wang, W.; Jin, W.; Han, W.; Liu, W.; Ding, W.; Chen, Y.; Feng, X. Study on the Efficiency of On-Site Sludge Reduction Using Ti/SnO2-Sb and Ti/RuO2-IrO2 Electrodes Based on a Cell Lysis-Cryptic Growth System. Water 2021, 13, 616. https://doi.org/10.3390/w13050616

AMA Style

He Z, Zhou X, Wang W, Jin W, Han W, Liu W, Ding W, Chen Y, Feng X. Study on the Efficiency of On-Site Sludge Reduction Using Ti/SnO2-Sb and Ti/RuO2-IrO2 Electrodes Based on a Cell Lysis-Cryptic Growth System. Water. 2021; 13(5):616. https://doi.org/10.3390/w13050616

Chicago/Turabian Style

He, Zhongqi, Xu Zhou, Wenhui Wang, Wenbiao Jin, Wei Han, Wentao Liu, Wanqing Ding, Yidi Chen, and Xiaochi Feng. 2021. "Study on the Efficiency of On-Site Sludge Reduction Using Ti/SnO2-Sb and Ti/RuO2-IrO2 Electrodes Based on a Cell Lysis-Cryptic Growth System" Water 13, no. 5: 616. https://doi.org/10.3390/w13050616

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